libmetricslogger: Use libBionicGtestMain instead of a custom test runner.

Also remove commented out code I accidentally left in.

Bug: 34456830
Test: libmetricslogger_test
Change-Id: If76d3013ec7eaa71cef67c6db04d810745e3833e

libmetricslogger/Android.bp

@@ -57,8 +57,8 @@ cc_test {
         "libbase",
         "libmetricslogger_debug",
     ],
+    static_libs: ["libBionicGtestMain"],
     srcs: [
         "metrics_logger_test.cpp",
-        "testrunner.cpp",
     ],
 }

libmetricslogger/metrics_logger_test.cpp

@@ -20,12 +20,5 @@
 
 TEST(MetricsLoggerTest, AddSingleBootEvent) {
   android::metricslogger::LogHistogram("test_event", 42);
-  /*pid_t pid = getpid();
-  struct logger_list *logger_list = android_logger_list_open(
-      LOG_ID_EVENTS, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 0, pid);
-
-  logger_list = NULL;
-  log_msg log_msg;
-  android_logger_list_read(logger_list, &log_msg);
-  std::cout << log_msg.len() << std::endl;*/
+  // TODO(jhawkins): Verify the EventLog is updated.
 }

libmetricslogger/testrunner.cpp

@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <gtest/gtest.h>
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  android::base::InitLogging(argv, android::base::StderrLogger);
-  return RUN_ALL_TESTS();
-}